666056003256 has 48 divisors (see below), whose sum is σ = 2061601916400. Its totient is φ = 190301715072.

The previous prime is 666056003251. The next prime is 666056003269. The reversal of 666056003256 is 652300650666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666056003251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 660769341 + ... + 660770348.

It is an arithmetic number, because the mean of its divisors is an integer number (42950039925).

Almost surely, 2^666056003256 is an apocalyptic number.

It is an amenable number.

666056003256 is an abundant number, since it is smaller than the sum of its proper divisors (1395545913144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

666056003256 is a wasteful number, since it uses less digits than its factorization.

666056003256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321539708 (or 1321539701 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 45.

The spelling of 666056003256 in words is "six hundred sixty-six billion, fifty-six million, three thousand, two hundred fifty-six".